If you want to be more convincing, try adjusting the speed at which you speak and how many pauses…
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Following similar logic, The Daily Muse has a few words of advice based on the tricks used by persuasive people in their speeches:

In short: If you're preaching to the choir, speak slowly; if not, speak quickly. And if your audience is neutral or apathetic, speak quickly so you'll be less likely to lose their attention.

Speaking faster gives dissidents lesser time to form counterpoints and more easily persuades them. Speaking slower lets those likely to believe you stack your rationale on top of their own bias to form a stronger opinion in your favour.